@media all and (max-width: 1280px) {
  .header-inner,
  .nav-inner,
  footer,
  .content-block,
  .video-layer-inner {
    padding-left: 40px;
    padding-right: 40px;
  }
}
@media all and (max-width: 900px) {
  .header-inner,
  .nav-inner,
  footer,
  .content-block,
  .video-layer-inner {
    padding-left: 30px;
    padding-right: 30px;
  }
  #features .feat:nth-of-type(3n+1) {
    clear: none;
  }
  #features .feat:nth-of-type(2n+1) {
    clear: both;
  }
  #features .feat {
    width: 50%;
  }
  #about {
    margin-bottom: 0px;
  }
  #about .phones {
    float: none;
    margin: 0 auto;
    width: 464px;
    margin-bottom: 60px;
  }
  #about .info {
    margin-left: 0;
    float: none;
  }
  #about h2 {
    text-align: center;
    margin-left: 40px;
    margin-right: 40px;
  }
}
@media all and (max-width: 768px) {
  nav li {
    margin-left: 30px;
  }
}
@media all and (max-width: 640px) {
  .header-inner,
  .nav-inner,
  footer,
  .content-block,
  .video-layer-inner {
    padding-left: 20px;
    padding-right: 20px;
  }
  #download .app-icon {
    width: 150px;
    height: 150px;
  }
  #download .info {
    margin-left: 180px;
  }
  #download h1 {
    font-size: 35px;
    font-weight: 300;
  }
  #download .slogan {
    font-size: 25px;
  }
  footer .social {
    padding: 30px 50px;
  }
  nav {
    display: none;
  }
  header {
    height: 500px;
  }
  header .logo {
    margin-top: 70px;
  }
  header .open-video {
    font-size: 25px;
    height: 50px;
    line-height: 50px;
  }
  header .slogan {
    font-size: 35px;
    line-height: 1.3;
  }
}
@media all and (max-width: 568px) {
  #download {
    margin-top: 50px;
  }
  #download .app-icon {
    width: 200px;
    height: 200px;
    float: none;
    margin: 0 auto;
    margin-bottom: 30px;
  }
  #download .info {
    margin-left: 0;
    text-align: center;
  }
  #download .appstore-link {
    margin-left: auto;
    margin-right: auto;
  }
  #about .phones {
    width: 312px;
    margin: 0 auto;
    float: none;
  }
  #about .phone-left {
    display: none;
  }
  #about .phone-right {
    margin: 0;
  }
  #about h2 {
    margin-left: 0;
    margin-right: 0;
  }
  #features .feat {
    float: none;
    width: 100%;
    padding: 0;
  }
  #reviews .review {
    float: none;
    width: 100%;
  }
  footer {
    font-size: 15px;
  }
}
@media all and (max-width: 350px) {
  body {
    font-size: 15px;
  }
  h1,
  h2,
  h3 {
    font-weight: normal;
  }
  #download {
    margin-bottom: 50px;
  }
  #download .app-icon {
    width: 150px;
    height: 150px;
  }
  #download h1 {
    font-size: 25px;
    font-weight: normal;
  }
  #download .slogan {
    font-size: 18px;
    font-weight: normal;
  }
  #download .appstore-link {
    width: 200px;
    height: 60px;
  }
  #about {
    margin: 50px 0 0;
  }
  #about h2 {
    font-size: 25px;
    margin-left: 0;
    margin-right: 0;
  }
  #about .phone,
  #about .phones {
    width: 264px;
    height: 469px;
  }
  #about .phone {
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.5);
  }
  #about .phones {
    margin-bottom: 50px;
  }
  #about .shadow {
    display: none;
  }
  #about .phone-bg {
    display: none;
  }
  #about .swiper-container {
    left: 0;
    top: 0;
  }
  #features h2 {
    font-size: 25px;
  }
  #features h3 {
    font-size: 20px;
  }
  #reviews {
    padding-top: 20px;
    padding-bottom: 20px;
  }
  #reviews .review {
    margin: 15px 0;
  }
  #reviews .quote {
    font-size: 21px;
  }
  #reviews .author {
    font-size: 15px;
  }
  #reviews .star {
    width: 30px;
    height: 30px;
  }
  footer .social {
    padding: 30px 0px;
    overflow: hidden;
  }
  footer .social a {
    float: left;
    width: 50%;
    margin: 0;
    text-align: center;
  }
}
